/Engine/Plugins/Runtime/AudioCapture/Source/AudioCaptureEditor/Public/IAudioCaptureEditor.h
Returns the total amount of audio devices
bool GetCaptureDevicesAvailable ( [TArray](API\Runtime\Core\Containers\TArray)< [FTakeRecorderAudioDeviceInfo](API\Plugins\AudioCaptureEditor\FTakeRecorderAudioDeviceInfo) > & OutDevices )